Polyurethane electrocoating composition

Details Polyurethane electrocoating composition Polyurethane electrocoating composition

1979-11-30

1980-12-23

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

204181R, 525456, C08G 1830

Patent

active

042412005

ABSTRACT:
An improved electrocoating composition can be produced by first reacting an isocyanate terminated prepolymer with a minor amount of peroxide to provide a polyurethane polymer blocked with pendant peroxide groups, and then coreacting acrylic monomers with minor amounts of other ethylenically unsaturated monomers in the presence of the preformed polyurethane-peroxide polymer to provide polyurethane copolymer with said monomers. The resulting polyurethane acrylic block copolymer can contain carboxyl or amine groups for dispersing into a dilute aqueous solution and provide an anodic or cathodic electrocoating composition.

REFERENCES:
patent: 3351575 (1967-11-01), Gilchrist
patent: 3351675 (1967-11-01), Gilchrist
patent: 3362899 (1968-01-01), Gilchrist
patent: 3575909 (1971-04-01), Gilchrist
patent: 4017556 (1977-04-01), Wang
patent: 4021505 (1977-05-01), Wang
patent: 4153776 (1979-05-01), Friedlander et al.

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